Malicious PDF — malware analysis report

Static analysis result for SHA-256 d508585fdb53eff6…

MALICIOUS

PDF

82.3 KB Created: 2021-03-25 10:35:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48f4db2d5c3707c3075a55f6aa1765d8 SHA-1: db085eb8e0b4d642ea7da841b9a34633739d109b SHA-256: d508585fdb53eff6e797cc746243724c76d80b9e15dab1341c977c6d36949b8e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a song title and authoring application details, suggesting a lure to a potentially malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/wix?keyword=when+god+made+you+natalie+grant+chords
    • http://idealslimitalia-oficial.site/how_to_use_a_cricut_expression_to_cut_vinyligcny.pdf
    • http://topifurolezup.iblogger.org/p_c_i_ki_full_form.pdf
    • http://vodoroding.info/66815439244z3kna.pdf
    • http://nout-sale.site/nirowaboxanefuxefofu3keu0.pdf
    • http://drive4mclanemilwaukee.com/katazevezowetolafabuvun09mea.pdf
    • http://world-wild-shop.com/firoviledos6nna.pdf
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/xesipipamupofo-furusofoxijat.pdf
    • http://meetcabinets.xyz/ruzumekameliwunujasomuli5w8.pdf
    • http://dmdmassage.com/48777142569n96o2.pdf
    • https://mitewowepo.weebly.com/uploads/1/3/0/8/130813710/xozokujepin_jiletekirozolo_gikurivas.pdf
    • https://fofopozisiwel.weebly.com/uploads/1/3/2/6/132696178/7518237.pdf
    • http://shurll.com/bkhpx
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cbd1ed50-d493-439e-af40-f3a3fc31c0c5/dijuwefidok.pdf
    • https://uploads.strikinglycdn.com/files/00e6f083-ff82-4f80-bca1-d092254431b2/16829855769.pdf
    • https://s3.amazonaws.com/mozirolinitaje/fofevep.pdf
    • https://s3.amazonaws.com/bajapovogam/bafurosumilesovox.pdf
    • http://favamolutamugiz.rf.gd/98428363306.pdf
    • https://s3.amazonaws.com/bexolamabad/gufodatovikutemavara.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fca5.bin
4e3940bb3e18c83f9aaf12912a9a3d8cba6501311d142a7214ba052562c79130
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA5 5468 bytes
font_01_sfnt_off00010f27.bin
f3491618c4228c223c517539f38503d79c4157b293358254f6aa7191f4b0cf57
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F27 13360 bytes